Delphinus. mammalia. CETACEA. ^5 
tail, 5 feet. Another individual was 21 4 feet in length ; and a third 20 feet 
in length, and 1 1 4 in circumference. The skin is smooth, resembnng oiled 
silk ; the colour is a deep bluish*black on the back, and generally whitish on the 
belly ; the blubber is 3 or 4 inches thick. The head is short and round. ; the 
upper iaw projects a little over the lower. Externally it has a single spiracle. 
The full oTown have generally 22 to 24 teeth, |ths to Uth inches in length, 
in each jaw. Mr Watson observed one with 28 teeth in the upper jaw, and 24 
in the lower. In the aged animals some of the teeth are deficient ; and in the 
sucklings none are visible. When the mouth is shut, the teeth lock between 
one another like the teeth of a trap. The tail is about 5 feet broad ; the 
dorsal fin about 15 inches high, cartilaginous and immoveable,” p. 497- Sand- 
eels have been found in their stomachs. This species is the Grind of the Faroe 
Isles, and probably the Delphinus globkeps of Cuvier. 
2. Snout produced^ Delphinus of Cuvier, vulgo Bot- 
tle-noses. 
5% D. Delphis. Common Dolphin. — Teeth upwards of 
forty in each side of the jaws, slender, bent, and pointed. 
Will. Ich. p. 28 Bor. Corn. p. 264. tab. xxvii. f. 1 — Hunter., Phil. 
Trans. 1787, p. 373. tab. xviii — ^Occasionally found on the British 
shores. 
This species seldom exceeds 11 feet in length. Hunter found five cervical 
vertebrm, and one common to the neck and back ; seventeen dorsal vertebrae, 
and thirty-seven caudal ones. Ribs eighteen. Sternum of three bones, and 
of some length. 
53. D. Tursio. — Teeth, about twenty on each side, with ob- 
tuse summits. 
Fauna Groen. p. 49. Del. truncatus. — Montagu, Wern. Mem. iii. 
p. 75. tab. iii — Taken 3d July 1814 in Duncannon Pool, near Stoke 
Gabriel, about five miles up the River Dart. 
British naturalists are indebted to the late George Montagu, Esq. for the 
few particulars which have been recorded of the only individual ever captured 
on our shores. It was 12 feet in length, and about 8 in circumference. From 
the snout to the blow-hole, 14| inches. Summits of the teeth even with the 
gum. Colour black above, whitish beneath. The skull which came into 
Montagu’s possession, was, including the upper jaw, 204 inches ; the breadth 
of the jaw across the hinder teeth, is nearly 5 inches ; on each side there are 
sockets for twenty teeth, besides a long depression behind the posterior socket, 
for some other purpose. The under jaw is somewhat longer, containing 
twenty-three sockets on each side, making collectively in both jaws eighty- 
six teeth, a number little inferior to what has hitherto been noticed in any 
cetaceous animal described. The sockets are variable in size without order, 
shewing that some teeth were double the size of others, and the approxima- 
tion of the sockets evinces the contiguity of the teeth, so that the teeth of 
both jaws must have opposed their surface to each other.” The truncated 
appearance of the teeth, and their little elevation above the gum, seem to in- 
dicate the great age of the individual, and leave some doubt as to the original 
form of the summit. According to Fabricius, the front is rounded and de- 
clining, ending in a produced snout. The teeth in both jaws are distant, with 
obtuse summits, like the Beluga, Above black, belly whitish. In this de- 
scription of the teeth, Fabricius seems to have contemplated them in position, 
while Montagu inferred their close connection, from the uncertain appear- 
ances of their alveoli, circumstances which seem to explain the only difference 
between the descriptions of the two authors. 
c 2 
